Riser pipe frost casing



Oct. 24, 1961 H. c. OSMUNDSON 3,005,241

RISER PIPE FROST CASING Filed Aug. 29, 1957 20 E i Z2 1 I;

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3,005,241 RIEER FEE FROM CASING Helrner L. Osmundson, 610 S. 3rd St, Bemidji, Minn. Filed Aug. 29, 1957, Ser. No. 680,975 3 Claims. (Cl. 20--.5)

The present invention relates to new and useful improvements in frost casings for preventing, without heat, freezing of water in the riser pipes of elevated water tanks, and has for one of its important objects to provide, in a manner as hereinafter set forth, a casing of this character wherein no insulation contacts the pipe.

Another important object of the invention is to provide a riser pipe frost casing of the character described comprising a plurality of insulating air spaces or chambers in lieu of the usual cork or other material.

Other objects of the invention are to provide a riser pipe frost casing of the aforementioned character which will be comparatively simple in construction, strong, durable, compact, reliable and which may be manufactured and erected at low cost.

These, together with other objects and advantages which will become subsequently apparent, reside in the details of construction and operation as more fully hereinafter described and claimed, reference being bad to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIGURE 1 is an elevational view, showing a frost casing embodying the present invention installed on a riser pipe;

FIGURE 2 is an enlarged view in horizontal section, taken substantially on the line 22 of FIGURE 1;

FIGURE 3 is an enlarged fragmentary view in vertical section, taken substantially on the line 3--3 of FIGURE 1; and

FIGURE 4 is a detail view in elevation, showing one of the stud joints.

Referring now to the drawing in detail, it will be seen that reference character 5 designates the lower portion of a conventional elevated water tank mounted on a suitable tower 6. The usual riser pipe 7 is connected to the tank 5.

The embodiment of the present invention which has been illustrated comprises a plurality of inner studs 8 of 2 x 4 lumber each of which, as shown to advantage in FIGURE 2 of the drawing, has a single corner only hearing on the pipe 7 at circumferentially spaced points. Secured by nailing on the inner studs 8 are similar intermediate studs 9 which are ofiset, as shown. The offset intermediate studs 9 permit the end portions of panels or sheets 10 of suitable insulating material to be nailed on the inner studs 8, the ends of said panels or sheets abutting said studs 9. The members 8 and 10 provide an inner wall 11 defining an inner chamber 12 around the riser pipe 7.

In FIGURE 4 of the drawing, reference character 13 designates nails which secure the studs 9 on the studs 8.

Panels or sheets 14, similar to the members 10, are mounted on the intermediate studs 9. The sheets or panels 14, in conjunction with the studs 9, provide an intermediate wall 15 which, in conjunction with the wall 11, defines an intermediate compartment or chamber 16.

Secured on the corner portions of the wall 15 are outer studs 17 comprising, respectively, relatively narrow and wide members 18 and 19 secured together in edge-to-face abutting engagement. Insulating sheets or panels 20, similar to the members 10 and 14, are secured on the studs 17 defining, in conjunction with the intermediate wall 15, an outer air space, chamber, or compartment 21. As shown in FIGURE 3 of the drawing, the insulating sheets or panels 20, like the sheets or panels 10 and 14, comprise tongue and groove joints 22. The insulating sheets or panels 20 provide the outer wall 23 of the frost casing.

The joints or corners of the walls 23 are closed by angle bars 24 nailed on the corner portions of the casing.

It will thus be seen that a casing has been provided comprising a plurality of dead air spaces or chambers around the riser pipe in lieu of the usual cork or other insulating material. The inner studs 8, each having a single corner only bearing on the riser pipe 7, space the insulating members 10 therefrom, causing any condensation which may form to drip by gravity down said pipe. The offset intermediate studs 9 close the corners of the inner wall 11 and the outer studs 17 close the corners of the intermediate wall 15. Then, as hereinbefore stated, the corners of the outer wall 23 are closed by the angle members 24. All joints are leak-proof for excluding outside air.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit. the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. The combination of a vertical riser pipe of circular cross-section and a frost casing enclosing the pipe comprising a first and second rectangular closure surrounding said pipe, said second enclosure surrounding the first enclosure, the first enclosure including a first vertical stud of rectangular cross-section within each of its corners, each stud having line contact only at an inner edge with an outer surface of said pipe, first flat panels spaced from the pipe and having vertical side edges extending between adjacent studs and secured to said studs at their sides facing outwardly from said pipe, one of the side edges of each panel being spaced from the outermost corner of the stud supporting said one side edge so as to expose a portion of the stud surface in contact with said one side edge, said second rectangular closure comprising a second vertical stud of rectangular cross-section overlapping and secured in direct contact with the exposed portion of each of said first vertical studs and extending outwardly therefrom, second fiat panels spaced from and generally parallel to said first panels extending between adjacent ones of said second studs and secured thereto at their sides facing outwardly from said pipe.

2. The device as defined in claim 1 including vertically elongated angle members secured over corners defined by adjacent edges of said second panels, third fiat panels extending between and secured to outer surfaces of said angle members so as to define air spaces between said second and third panels.

3. The device defined in claim 1 wherein said first studs each have inner and outer parallel vertically extending side surfaces and inner and outer parallel vertically extending end surfaces of less width than said side surfaces, each pair of said first studs which are diagonally opposed to one another having their side surfaces parallel and each of said first studs having its side surfaces perpendicular to the side surfaces of each adjacent first stud whereby the studs may be of the same size and the first flat panels may be of the same width.

References Cited in the file of this patent UNITED STATES PATENTS 253,658 Arbuckle Feb. 14, 1882 289,833 Hartman Dec. 11, 1883 522,105 Canda June 26, 1894 854,366 Macomber May 21, 1907 965,101 Garfinkel July 19, 1910 1,313,420 Shaw Aug. 19, 1919 1,340,332 Fitzpatrick May 18, 1920 2,264,377 Hoffman Dec. 2, 1941 

